Settings: Navbar and Navrings customization (1/2)

This commit adds:
{x} Navbar up to 5 buttons
{x} navring up to 5 buttons
{x} dynamic menu behaviour
{x} landscape navbar options
{x} button glow color
{x} button icon color
{x} navring and navbar user can set system or custom icons
{x} navbar height and width
{x} enable/disable navbar and navring

Change-Id: I2a38860553524d4c76c5bb6afe210cb662bcacd9